Built around Kawasaki's classic motorcycle platform, the 1972 Kawasaki G3SS utilizes a 89 cc (5.4 cu in) single cylinder, two-stroke layout. In factory specification, peak output is rated at 10.5 HP (7.7 kW) at 8,000 rpm while maximum torque reaches 9.8 Nm (7.2 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 118 HP per liter and a 1,000 rpm working window between peak torque (7,000 rpm) and peak power (8,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the G3SS measures 83 kg (183 lbs) dry, translating to a power-to-weight ratio of 0.13 HP/kg (7.9 kg per horsepower). Rider ergonomics and chassis geometry center around a 770 mm (30.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,150 mm (45.3 in) wheelbase engineered for quick, flickable steering geometry. The 8.6-liter (2.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 105 km/h (65 mph).
Specific Output
118 HP/L
Power-to-Weight
0.13 HP/kg (7.9 kg/HP)
Power Band Window
7,000–8,000 rpm
Standover Height
770 mm (30.3 in)
Engine
Displacement89.0 ccm (5.43 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power10.5 HP (7.7 kW)) @ 8000 RPM
Torque9.8 Nm (1.0 kgf-m or 7.2 ft.lbs) @ 7000 RPM
Compression7.0:1
Bore x Stroke47.0 x 51.8 mm (1.9 x 2.0 inches)
Fuel SystemCarburettor. Mikuni VM19SC
Fuel ControlRotary valves
Ignitionpoints
Lubrication2 stroke injection
Max RPM9000
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, 5-plate
Performance
Top Speed104.6 km/h (65.0 mph)
ExhaustSingle chrome pipe
Chassis
Frame TypeSteel
Rake24.0°
Trail1 mm (0.0 inches)
Front SuspensionStandard froks
Front Travel1 mm (0.0 inches)
Rear Suspension2 shocks
Rear Travel1 mm (0.0 inches)
Wheelbase1150 mm (45.3 inches)
Ground Clearance160 mm (6.3 inches)
Wheels & Brakes
Front Tyre2.75-18
Rear Tyre2.75-18
Front BrakesExpanding brake (drum brake)
Front Brake Ø110 mm (4.3 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø110 mm (4.3 inches)
Dimensions & Weight
Dry Weight83.0 kg (183.0 pounds)
Power/Weight0.1265 HP/kg
Seat Height770 mm (30.3 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
